关键词: 河流, 三角洲, 储层描述, 沉积模式, 层次分析, 井间预测

Abstract: This paper elaborates the research method for establishing geological model and systematic description of reservoir macroheterogeneity system. Taking advantage of the research logic of hierarchical levels analysis from modern deposition and outcrop study, and the new description method of "deposition pattern predicting", utilizing the density well pattern logging curves data, and guided by distinct deposition rules of large fluvial-delta, sandbody geometry and interior architecture are dissected based on the heterogeneity levels from large to small. Heterogeneity is divided into six levels for description including lithfacies section,single cycle (single layer),microfacies (or relative homogeneous unit),single sandbody, architectural element, and interior heterogeneity. Also,sandbody heterogeneity such as the inter-wells continuity, geometry, boundary, thickness and permeability pattern are explained in detail.

Key words: fluvial, delta, reservoir description, depositional pattern, hierarchical levels analysis, inter-wells predicting